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I know how to get all categories with get_categories and name custom taxonomy name, but wordpress only shows those categories those are assigned to a post. Those which are created, but not assigned, will not show up with any of these methods.

So is there any function that shows all categories that created + assigned and not assigned.

I am working in a admin panel to show all categories in a drop down list in a custom post type.

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I know how to get all categories with get_categories

I think you've missed some of the arguments in get_categories. By default, empty categories (categories without posts) are hidden

'hide_empty'               => 1,

To get categories without posts, simply set hide_empty to 0

'hide_empty'               => 0,

Here is an example

$categories = get_categories( 'hide_empty=0' );
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  • Yeah that worked thanks. I overlooked it silly of me.
    – Shah
    Commented Jul 18, 2014 at 12:27
  • No problem, just glad it fixed your problem :-) Commented Jul 18, 2014 at 12:33

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